User Manual

RBS 2101, RBS 2102, RBS 2103 RBS 2202 Radio Configurations
1 Introduction
This document describes the radio configurations for RBS 2102, RBS 2102,
RBS 2103 and RBS 2202. The following types of radio configurations are
described:
• Basic configurations, see Section 5 Basic Configurations on page 7
• Site equipment configurations, see Section 6 Site Equipment Configurations
on page 49
2 References
/GSM:05.05/
GSM Requirements 05.05 phase 2; version 4.13.0.
Additional numeric characters designate chapter
number.
/GSM:05.08/
GSM Requirements 05.08 phase 2; version 4.15.0.
Additional numeric characters designate chapter
number.
3 Definitions
Tower Mounted
Amplifier (TMA)
The TMA compensates for signal loss in the receiver
antenna cables, reduces system noise and improves
uplink sensitivity. The TMA can consist of a duplex filter.
Duplex is the function that allows communication in two
directions (sending and receiving) on one channel.
The TMA used for 12 TRX products is Dual Duplex
TMA (ddTMA). Some configurations can use a TMA
designed for reception only (rTMA).
Antenna Reference
Point
The antenna reference point is the point where the radio
signal crosses the RBS border, that is, the connector
for the antenna feeder. For an example of the antenna
reference point when TMA is used, seeFigure1on
page 4.
Note: The TMA is inside the RBS border.
3 (74)
EN/LZT 720 0341 Uen R1A